Water Usage Cost Calculator
Calculate residential and commercial water utility expenses, converting between gallons, cubic feet, CCF, and liters with separate water supply and sewer treatment rates.
Water & Sewer Rates
Volumetric Water & Sewer Formula
Total Utility Cost = (Gallons × Water Rate/Gal) + (Gallons × Sewer Rate/Gal) + Flat Customer Fee- Volumetric Units: 1 CCF (Centum Cubic Feet) = 100 cubic feet = 748.05 US Gallons.
- Water Supply Rate: Municipal cost per 1,000 gallons for drinking water treatment and pumping.
- Sewer Treatment Rate: Wastewater treatment charge (often billed at 1.2 to 1.6× clean water rates based on metered winter water volume).
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Uses standard US customary conversion: 1 CCF = 748.052 US Gallons.
- Sewer charges are modeled on 100% volumetric sewer return unless winter averaging applies.
Frequently Asked Questions
Why is sewer more expensive than clean tap water on my utility bill?
Treating wastewater requires extensive biological filtration, chemical disinfection, sludge disposal, and compliance with stringent EPA Clean Water Act environmental standards, which are significantly more capital-intensive than treating raw reservoir water.
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